(19)

(11)

EP 1 562 706 A2

(12)

(88) Date of publication A3: 12.08.2004 (43) Date of publication: 17.08.2005 Bulletin 2005/33 (21) Application number: 03811022.7 (22) Date of filing: 10.11.2003

(51) International Patent Classification (IPC)7: B01J 35/10, B01J 35/02, B01J 23/75, C07C 1/04 (86) International application number: PCT/GB2003/004873 (87) International publication number: WO 2004/043596 (27.05.2004 Gazette 2004/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 13.11.2002 GB 0226514 (71) Applicants: Statoil ASA 4035 Stavanger (NO) Petroleum Oil & Gas Corporation of South Africa (Pty) Limited Waterfront,Cape Town 8001 / Private Bag X1,Waterfront 8002 (ZA)	(72) Inventors: RYTTER, Erling N-7049 Trondheim (NO) ERI, Sigrid N-7054 Ranheim (NO) SCHANKE, Dag N-7038 Trondheim (NO) (74) Representative: Rees, David Christopher et al Kilburn & Strode20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)